Aquarium gravel comes in all shapes and sizes. While gravel is the most popular aquarium substrate, all of the options may get confusing. Then when you throw in other substrates like sand and soil, who knows what to choose? Just keep in mind the following when choosing your aquarium substrate. There are only a couple key functions of any fish tank substrate. They anchor your plants and roots. They support your fish tank rocks and wood. Other than that, they are mostly just for plain old decoration. There are however, some basic things you should know about aquarium gravel to save yourself some trouble later.
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Decoration